Issue 28, 2022

Catalytic amination of lactic acid using Ru–zeolites

Abstract

In this work we investigate the synthesis of alanine from lactic acid, a biobased platform chemical, using ammonia as a nitrogen source and Ru/zeolite catalysts. We report a high alanine selectivity when using Ru/BEA of 80–93%. Reaction side products were identified as ethanol, propionic acid or propanamide and the reaction mechanism was investigated. We further optimised reaction conditions resulting in turn over numbers five times higher than previously reported and could reduce Ru leaching by 30–40%. However, leaching and catalyst stability remains a concern. Furthermore, we critically analyse the benefits of Ru/zeolites versus their stability under the basic, high temperature reaction conditions.

Graphical abstract: Catalytic amination of lactic acid using Ru–zeolites

Supplementary files

Article information

Article type
Paper
Submitted
06 jan 2022
Accepted
26 apr 2022
First published
26 apr 2022

Dalton Trans., 2022,51, 10773-10778

Catalytic amination of lactic acid using Ru–zeolites

M. A. Shah, I. Khalil, S. Tallarico, T. Donckels, P. Eloy, D. P. Debecker, M. Oliverio and M. Dusselier, Dalton Trans., 2022, 51, 10773 DOI: 10.1039/D2DT00054G

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